A nanometer zero-valent iron-carbon material and its preparation method and application

A nano-zero-valent iron and carbon material technology, applied in the field of nano-materials, can solve the problems of easy agglomeration and passivation of materials, complex preparation process, uneven particles, etc., and achieve the effect of promoting electron transfer, simple preparation and uniform dispersion
CN112607832BActive Publication Date: 2021-09-21CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINESE RES ACAD OF ENVIRONMENTAL SCI
Publication Date
2021-09-21

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Abstract

The invention relates to the field of nanometer materials, in particular to a nanometer zero-valent iron-carbon material and its preparation method and application. The material includes a carbon layer and ultra-fine nano-zero-valent iron uniformly distributed in the carbon layer, wherein the iron content is as high as 92-97%, and the particle size of the nano-zero-valent iron is between 3-8nm. Further, the nano-zero The element composition of the valent iron-carbon material also includes at least one of oxygen and nitrogen, wherein there is a coordination bond between the iron and nitrogen, and the nanometer zero-valent iron-carbon material is a porous material with a specific surface area of ​​120-140m 2 / g, the pore volume is 0.3‑0.4cm 3 / g, the pore size is 2-3nm. The nanometer zero-valent iron-carbon material provided by the invention has better activity of degrading organic pollutants, and can be used in the treatment of sewage polluted by organic matter.
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Description

technical field

[0001] The invention relates to the field of nanometer materials, in particular to a nanometer zero-valent iron-carbon material and its preparation method and application. Background technique

[0002] Commonly used water treatment methods include adsorption, coagulation, membrane separation, microbial degradation, and iron-carbon micro-electrolysis. Among them, the basic principle of the iron-carbon micro-electrolysis method is: in polluted water, iron-carbon materials form countless tiny primary batteries due to the potential difference between iron and carbon, in which low-potential iron is the anode and high-potential carbon is the cathode. The electrochemical reaction occurs to degrade the pollutants. At the same time, the material utilizes the dissolved oxygen in the solution to generate H in situ 2 o 2 , H 2 o 2 Decomposition produces highly active hydroxyl radicals, further improving the degradation efficiency of organic pollutants. The iron-car...

Claims

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